Alignment questions slope location single-family house new construction

Evening,

we would like the balcony/terrace to face northwest, with a recess for a shaded spot in summer. The parking space is really an issue, especially since the triangle in front of the house would practically suggest itself there. According to the authorities, the garage/carport is only allowed in the building window without exemption. The 20m initially sounded okay, but 3m to the left to the neighbor and then house with garage next door, it’s already tight.

Oh yes, in this draft a usable attic was also planned above the north/east side for additional rooms (hope the image works, inserted from the clipboard) In other words, open space above the living/dining area. Thus, there would actually be enough space there for hobbies and such

I only see 12 steps leading to the attic. But the ceiling there will be far too low.